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Re: Low compression in farmall 706


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Posted by The tractor vet on April 23, 2020 at 21:55:21 from (104.179.81.68):

In Reply to: Low compression in farmall 706 posted by Cowboy2005 on April 23, 2020 at 12:49:01:

I will throw in my fifty cents worth here , Since i know more about 706 gasser then anyone on here . Lets start with what engine as they used two engines , one is the C263 and on the later models they used a C291 . These engines have two different BORE CLASSES and what i mean here is the block bore is not all the same on either engine . once you have the head off and the top of the block cleaned up you will see letters by each hole and they can be and a - b - c - d , A AND B will take the same DRY sleeve and the FIT will work C and D class holes need a thicker sleeve as the bore was a little to big for the A and B sleeve . When you buy one of these after market kits they only come with the A B class bore , if you stuff and A or B into a C or D hole it will darn near fall in and it may run for a little while but it will snap off the lip of the sleeve and suck it down around the crank. The sleeves are a PRESS fit . No ya can get the correct sleeves for the bore class you have from Case I H but take you Nitro and a inhaler when they tell you the price per HOLE . The next down side to a 706 gasser is they do not like the gas ya get today , now IF you can find REAL 93 octane then they will run fine as that is the lowest octane they were designed to run on . Next up on the down side of the gassser is ya havve to run the Low Ash engine oil or they like to munch exhaust valves like M & M's . I personally ran a late model 706 gasser for years and got along doing everything it was designed to do . i pulled 4 x16 710 plow a I H 370 13.6 disc a four row planter with it i would buy any 706 gasser i could find and bring them home and get them back up and running and in the fields , all my friends bought them off me and they got along just fine with them TILL the oil companys changed the gas and we started eating pistons and scoring cylinders . Now there is only one left and it is setting in the weeds with a Newer Hy cap T/A clutch IDPTO shaft , new 15 GPM hyd pump a rebuilt PTo new clutch and pressure plate and one scrapped out piston , i am done putting in pistons as that one make piston # 16 that i have put in it due to the gas. If i do anything with that tractor it might get a 6.9 or a 7.3 . So if you want a 706 find a diesel the money you spend on a RUNNIG WORKING tractor will be money in the bank What you willo have in doing a correct out of chassis rebuild you will be looking at close to 4 grand , then when you find out that OH the clutch is out and low side of the T/A is toast your looking at 2500 or better then ya add i two new rear tires depending on if you want cheap China made or you want the Stones heres another 1200 to 2500 so that Cheap tractor by the time your done you could have bought and 886 that runs .


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